The 12 pieces Bosch Cookware with silicon lid covers are made up of strong materials that are cotton steel, aluminum, or stainless steel cores finished with high-end and extremely durable?non-stick coatings. The pots have amazing colors and patterns that give your kitchen an elegant display. The pots are made up of a coating?layer?that prevents/minimizes the burning of food. The pots can be used for food storage and also be used for food serving purposes. The strong materials makes the cookware easy to handle and also clean. The cookwares are a guarantee long-term investment plan.